CN103089225A - Anti-washout annular injection fracturing six way - Google Patents
Anti-washout annular injection fracturing six way Download PDFInfo
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- CN103089225A CN103089225A CN201310020713XA CN201310020713A CN103089225A CN 103089225 A CN103089225 A CN 103089225A CN 201310020713X A CN201310020713X A CN 201310020713XA CN 201310020713 A CN201310020713 A CN 201310020713A CN 103089225 A CN103089225 A CN 103089225A
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Abstract
The invention relates to the technical field of the coiled tubing fracturing. Provided is an anti-washout annular injection fracturing six way. The anti-washout annular injection fracturing six way comprises at least an upper flange, a six way body, a lower flange, through holes and four injection holes. The anti-washout annular injection fracturing six way is characterized in that bottom-to-top through holes are formed in the center of the six way body. The upper flange is arranged on the upper end face of the six way body, and the lower flange is arranged on the lower end face of the six way body. Four injection holes are respectively formed in the four side faces of the six way body. The four injection holes are respectively a first injection hole, a second injection hole, a third injection hole and a fourth injection hole. The horizontal heights of the four injection holes are the same. The location of each of the four injection holes in the side face is the same, and all bias relative to the axis of each through hole and downwards at 30 degrees. The anti-washout annular injection fracturing six way is used for protecting the coiled tubing from being damaged caused by the high pressure liquid, ensuring the safe and reliable process of the construction, and meanwhile, reducing the economic cost.
Description
Technical field
The present invention relates to coiled tubing fracturing technique field, be that the fluid erosion prevention annular space injects pressure break six logical.
Background technology
Along with the introducing and employment of coiled tubing fracturing technique, the annular fracturing technology is also promoted thereupon.Conventional fracturing injection cross joint is used for the coiled tubing annular fracturing, and because two injection holes of former injection four-way are in the same level height and over against oil pipe, the high-pressure spray of injection is known from experience oil pipe column is formed and faced impact directly, and is very big to the damage of coiled tubing.
Summary of the invention
The purpose of this invention is to provide a kind of fluid erosion prevention annular space, to inject pressure break six logical, avoids coup injury from highly pressurised liquid for the protection of coiled tubing, guarantees that construction safety reliably carries out, and reduces financial cost simultaneously.
Technical scheme of the present invention is that fluid erosion prevention annular space injection pressure break six is logical, which comprises at least upper flange, six logical bodies, lower flange, through hole and four injection holes, it is characterized in that: there is the through hole of up/down perforation at the center of six logical bodies, the upper surface of six logical bodies arranges upper flange, and the lower surface arranges lower flange; Four sides of six logical bodies arrange respectively four injection holes, four injection holes are respectively the first injection hole, the second injection hole, the 3rd injection hole and the 4th injection hole, four injection hole level heights are consistent, four injection holes are also identical in the position of each side, and all eccentric with respect to the axle center of through hole, and be 30 ° downwards.
The internal diameter of described through hole is 180 millimeters.
Described the first injection hole, the second injection hole, the 3rd injection hole and the 4th injection hole, the perpendicular diameter at these four injection hole places is 270mm, and the internal channel of four injection holes is, and the inclined-plane is parabola shaped to be connected with through hole.
Described upper flange and lower flange are respectively arranged with seal groove and flange hole, and seal groove is arranged on upper flange and lower flange and through hole close inboard, flange hole be evenly distributed in upper flange and lower flange around.
Described upper flange and lower flange are standard 7-1/16 wellhead flanges, and seal groove is BX156 gasket ring groove.
Characteristics of the present invention are: after 1, injection hole increases, become four holes by diplopore, can satisfy the requirement of large discharge capacity in construction, the layout of well head and fracturing unit truck and construction are more versatile and flexible simultaneously, can multi-facetedly select, reach the purpose of multi-purpose valve, satisfy the novel pressing crack construction needs such as the large discharge capacity pressure break of horizontal well, volume fracturing.
2,4 injection holes are 30 ° of angles distributions downwards, directly impact oil pipe when effectively avoiding injecting after effectively lifting surface area increases, and medium can flow to arbitrarily, and fluid resistance is little, the erosion of reduction oil pipe.Therefore the injection hole of 4 bias and mutual dislocation has avoided the direct erosion of high speed fracturing fluid to coiled tubing with respect to through hole 4 axle center bias, and avoids the interaction of multiply injection liquid stream to produce the acceleration eddy flow, prevents from coiled tubing is caused secondary injury.
3, but the multi-purpose valve four-way freely connects, and can satisfy the multiple layout of fracturing unit truck and construction requirement, can select for many discharge capacities, and this six logically has multiple connected mode, is not subjected to the restriction of installation direction, and pipeline connects and the flow direction of medium can be any.Can connect special-purpose union flange, union can directly be connected with the pressure break pipeline, also can directly be connected with the gate valve of 78-105 well head, can directly be connected with preventer or production tree.
4, the injection hole aperture increases, and can multi-facetedly select, and guaranteeing has enough space oil filling pipe protective devices and do not affect operational discharge capacity.
5, six lead to multidirectional structures, can realize the effect of multi-purpose valve, satisfy the construction needs of realizing fast in injection process the fracturing reform on stratum.Use the logical coiled tubing of effectively having protected of this annular fracturing six; realize underground construction operation fast and effectively; coiled tubing can realize that round trip fast effectively reduces the well control risk simultaneously simultaneously, has realized essential safety, meets the green formation testing requirement of carrying out in present HSE management.
6, center four hole internal channels are that the inclined-plane is parabola shaped to be passed through mutually, and are smooth smooth, are difficult for deposition medium, are convenient to the pipeline through wash.
7, product hermeticity can be good, has good interchangeability, and simple in structure, relative volume is little, and weight saving is used and simply is convenient to maintenance.
Description of drawings
The present invention is further illustrated below in conjunction with embodiment:
Fig. 1 is that the fluid erosion prevention annular space injects the logical perspective view of pressure break six;
Fig. 2 is that the fluid erosion prevention annular space injects the logical plane structure schematic diagram of pressure break six;
Fig. 3 is that the fluid erosion prevention annular space injects the logical sectional drawing of pressure break six.
In figure: 1, upper flange; 2, six logical bodies; 3, lower flange; 4, through hole; 5, seal groove; 6, flange hole; 7, the first injection hole; 8, the second injection hole; 9, the 3rd injection hole; 10, the 4th injection hole.
The specific embodiment
Embodiment 1
As Fig. 1, Fig. 2, shown in Figure 3, it is logical that the fluid erosion prevention annular space injects pressure break six, which comprises at least upper flange 1, six logical bodies 2, lower flange 3, through hole 4 and four injection holes, it is characterized in that: there is the through hole 4 of up/down perforation at the center of six logical bodies 2, the upper surface of six logical bodies 2 arranges upper flange 1, and the lower surface arranges lower flange 3; Four sides of six logical bodies 2 arrange respectively four injection holes, four injection holes are respectively the first injection hole 7, the second injection hole 8, the 3rd injection hole 9 and the 4th injection hole 10, four injection hole level heights are consistent, four injection holes are also identical in the position of each side, and all eccentric with respect to the axle center of through hole 4, and be 30 ° downwards.
The fluid erosion prevention annular space injects pressure break six logical method for designing and purpose: by the optimum design of structuresprogram to plain tubing pressure break four-way, design eccentric asymmetrical pressure break the first injection hole 7 and pressure break the second injection hole 8 on its original structure basis, increased simultaneously the 3rd injection hole 9 and the 4th pressure injection hand-hole 10.4 injection holes are 30 ° of centrifugal distributions in angle downwards, the first injection hole 7 and the second injection hole 8 and the 3rd injection hole 9 and the 4th injection hole 10 are arranged and are all departed from the center, injection hole increases and oblique cloth postpone, can satisfy the requirement of large discharge capacity in construction, simultaneously loose structure make well head and fracturing unit truck to lay construction more versatile and flexible, limitations is little, and multi-faceted selection the in can constructing at the scene reaches the purpose of multi-purpose valve.
It is that the six logical bodies 2 of logical bodies 2, six are through with through hole 4 from top to bottom that the fluid erosion prevention annular space injects pressure break six logical bases, and the internal diameter of through hole 4 is 180 millimeters, and 60 millimeters of coiled tubing external diameters have larger gap annular space relatively.
The upper and lower end face of six logical bodies 2 arranges respectively upper flange 1 and lower flange 3, upper flange 1 and lower flange 3 are standard 7-1/16 wellhead flanges, be evenly arranged flange hole 6 around upper flange 1 and lower flange 3, and in the close side of upper flange 1 and lower flange 3 and through hole, seal groove 5 being set, seal groove 5 is BX156 gasket ring grooves.
Four sides of six logical bodies 2 arrange respectively four injection holes, four injection holes are respectively the first injection hole 7, the second injection hole 8, the 3rd injection hole 9 and the 4th injection hole 10, four injection hole level heights are consistent, four injection holes are also identical in the position of each side, and all eccentric with respect to the axle center of through hole 4, and be 30 ° downwards.
The perpendicular diameter at these four injection hole places is 270mm, and guaranteeing has enough space oil filling pipe protective devices and do not affect operational discharge capacity; And the internal channel of four injection holes is that the inclined-plane is parabola shaped to be connected with through hole, and is smooth smooth, is difficult for deposition medium, is convenient to the pipeline through wash.
During work, the fluid erosion prevention annular space injects pressure break six all to be crossed lower flange 3 and is connected with massive plate valve on casing head or casing head, is connected with coiled tubing lubricator or preventer by upper flange 1.The first injection hole 7 and the second injection hole 8 be connected with the fracturing pump group, the 3rd injection hole 9, the 4th injection hole 10 are connected with Other related equipment, can seal with blind plate when not required.
During pressure break, coiled tubing enters the shaft bottom through this six logical through hole 4, from the high pressure fracture liquid of the fracturing pump group output pressure with 20-50MPa, 1.5-3m
3The flow of/min through shunting after from the first injection hole 7 and the second injection hole 8(as required the 3rd injection hole 9, the four injection holes 10 also can inject simultaneously) inject simultaneously the annular space between through hole 4 and coiled tubing, enter pit shaft pressure break bottom.Because coiled tubing is coaxial with through hole 4, and 4 the first injection holes 7, the second injection hole 8, the 3rd injection hole 9 and the 4th injection holes 10 are eccentric and 30 degree are arranged downwards with respect to through hole 4 axle center, have therefore just avoided the high speed fracturing fluid to interact and have produced turbulent flow to the direct erosion of coiled tubing.Prevent from coiled tubing is damaged.
This annular fracturing injection six is led on installing and using identical with oil pipe fracturing injection cross joint mounting method, use and maintenance is simple, by injecting simultaneously fracturing fluid to the first injection hole 7, the second injection hole 8 and the 3rd injection hole 9, the 4th injection hole 10, realize the fracturing reform to the stratum in fracturing process.Coiled tubing can realize that round trip fast effectively reduces the well control risk simultaneously, uses simultaneously this annular fracturing six to lead to and has effectively protected coiled tubing, realizes underground construction operation fast and effectively.
Claims (5)
1. it is logical that the fluid erosion prevention annular space injects pressure break six, which comprises at least upper flange (1), six logical bodies (2), lower flange (3), through hole (4) and four injection holes, it is characterized in that: there is the through hole (4) of up/down perforation at the center of six logical bodies (2), the upper surface of six logical bodies (2) arranges upper flange (1), and the lower surface arranges lower flange (3); Four sides of six logical bodies (2) arrange respectively four injection holes, four injection holes are respectively the first injection hole (7), the second injection hole (8), the 3rd injection hole (9) and the 4th injection hole (10), four injection hole level heights are consistent, four injection holes are also identical in the position of each side, and all eccentric with respect to the axle center of through hole (4), and be 30 ° downwards.
2. it is logical that the fluid erosion prevention annular space described according to claim 1 injects pressure break six, and it is characterized in that: the internal diameter of described through hole (4) is 180 millimeters.
3. it is logical that the fluid erosion prevention annular space described according to claim 1 injects pressure break six, it is characterized in that: described the first injection hole (7), the second injection hole (8), the 3rd injection hole (9) and the 4th injection hole (10), the perpendicular diameter at these four injection hole places is 270mm, and the internal channel of four injection holes is, and the inclined-plane is parabola shaped to be connected with through hole.
4. it is logical that the fluid erosion prevention annular space described according to claim 1 injects pressure break six, it is characterized in that: described upper flange (1) and lower flange (3) are respectively arranged with seal groove (5) and flange hole (6), seal groove (5) is arranged on upper flange (1) and lower flange (3) inboard close with through hole (4), flange hole (6) be evenly distributed in upper flange (1) and lower flange (3) around.
5. it is logical that the fluid erosion prevention annular space described according to claim 4 injects pressure break six, and it is characterized in that: described upper flange (1) and lower flange (3) are standard 7-1/16 wellhead flanges, and seal groove (5) is BX156 gasket ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020713.XA CN103089225B (en) | 2013-01-21 | 2013-01-21 | Fluid erosion prevention annular space injects pressure break clematis stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020713.XA CN103089225B (en) | 2013-01-21 | 2013-01-21 | Fluid erosion prevention annular space injects pressure break clematis stem |
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| CN103089225A true CN103089225A (en) | 2013-05-08 |
| CN103089225B CN103089225B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310020713.XA Active CN103089225B (en) | 2013-01-21 | 2013-01-21 | Fluid erosion prevention annular space injects pressure break clematis stem |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350949A (en) * | 2015-11-19 | 2016-02-24 | 盐城杰富茂博石化机械制造有限公司 | A fracturing head with 8 outlets |
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| US20060090891A1 (en) * | 2004-11-02 | 2006-05-04 | Mcguire Bob | Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same |
| US20080087439A1 (en) * | 2006-10-12 | 2008-04-17 | Stinger Wellhead Protection, Inc. | Configurable wellhead system with permanent fracturing spool and method of use |
| CN201627560U (en) * | 2010-04-09 | 2010-11-10 | 杜开全 | Device for fracturing wellhead |
| CN201635697U (en) * | 2010-02-05 | 2010-11-17 | 南京伟业机械有限公司 | Fractured and acidized oil extraction wellhead device |
| CN202023546U (en) * | 2011-04-25 | 2011-11-02 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Annular fracturing injection four-way joint |
| CN102373895A (en) * | 2011-11-09 | 2012-03-14 | 北京托普威尔石油技术服务有限公司 | Well head device |
| CN203097861U (en) * | 2013-01-21 | 2013-07-31 | 咸阳川庆鑫源工程技术有限公司 | Six-way device preventing erosion ring empty injection fracture |
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2013
- 2013-01-21 CN CN201310020713.XA patent/CN103089225B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060090891A1 (en) * | 2004-11-02 | 2006-05-04 | Mcguire Bob | Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same |
| US20080087439A1 (en) * | 2006-10-12 | 2008-04-17 | Stinger Wellhead Protection, Inc. | Configurable wellhead system with permanent fracturing spool and method of use |
| CN201635697U (en) * | 2010-02-05 | 2010-11-17 | 南京伟业机械有限公司 | Fractured and acidized oil extraction wellhead device |
| CN201627560U (en) * | 2010-04-09 | 2010-11-10 | 杜开全 | Device for fracturing wellhead |
| CN202023546U (en) * | 2011-04-25 | 2011-11-02 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Annular fracturing injection four-way joint |
| CN102373895A (en) * | 2011-11-09 | 2012-03-14 | 北京托普威尔石油技术服务有限公司 | Well head device |
| CN203097861U (en) * | 2013-01-21 | 2013-07-31 | 咸阳川庆鑫源工程技术有限公司 | Six-way device preventing erosion ring empty injection fracture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350949A (en) * | 2015-11-19 | 2016-02-24 | 盐城杰富茂博石化机械制造有限公司 | A fracturing head with 8 outlets |
| CN105350949B (en) * | 2015-11-19 | 2019-04-30 | 盐城杰富茂博石化机械制造有限公司 | A kind of fracturing head with octahedral outlet |
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| CN103089225B (en) | 2016-08-10 |
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